A laser collimator includes an optical lens having an optical axis; a sliding lens holder for housing the lens having a longitudinal opening parallel to the optical axis; a stationary lens holder ring for fitting to the front of the sliding lens holder and having a protruding key for receiving the longitudinal opening; and a focusing ring movable along the optical axis, wherein the protruding key placed within the longitudinal opening prevents the sliding lens holder from rotating.

 
Web www.patentalert.com

< Optical pickup and optical disc device

> Apparatus for detecting abnormal states of laser diode power in an optical disc recording/reproducing device

~ 00414